The ice sheets on Earth advance and then retreat in specific glacial cycles. The Earth’s ice caps reached a maximum about two million years ago. Currently, we are in an inter-glacial period. […]
The water cycle of the Earth is dependent on the water reservoirs that exist on the Earth. These reservoirs can be in liquid, solid, or gaseous forms. […]
The theory of plate tectonics was accepted by the world of science because of the overwhelming evidence. This theory was also able to successfully combine new data from different disciplines. […]
Out of the Earth’s many geochemical cycles, three are most important: water cycle, atmospheric cycle, and rock cycle. […]
Convergent boundaries mark places where the mantle convection goes down, the plates converge, and one of them plunges beneath the other one. There are three kinds of boundaries possible in a convergent situation. […]
Wherever two plates slide by each other, transform boundaries will occur. Among these boundaries is the San Andreas Fault, which is located in California and is extremely active. […]
The most convincing evidence for the formation of new crust came from sea-floor magnetic data and the age of volcanic islands. Learning about them has been a pivotal point in the history of plate tectonics. […]
The eventual accumulation and weight of overwhelming evidence convinced the geological community to abandon years of research on isostacy and instead focus on the theory of plate tectonics. […]
The continental drift theory was proposed by Alfred Wegener in 1912. It was based on several intriguing observations he made regarding the match-up of geological and paleontological phenomena across the Atlantic Ocean. […]
A new crust of volcanic material is formed along divergent boundaries. There are many divergent boundaries, such as, the Mid-Atlantic Ridge, the Indian Ocean Ridge, and the Juan de Fuca Ridge. […]
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